Window.



G. B. EVANS.

WINDOW.

APPLICATION FILED NOV. 19, 1910.

Patented Aug. 22, 1911.

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- G. B. EVANS.

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G. B. EVANS.

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GEORGE BENJAMIN EVANS, 0F TORONTO, ONTARIO, CANADA.

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Specification of Letters Patent.

Patented Aug. 22, 1911.

Application filed November 19, 1910. Serial No. 593,293.

To all whom it may concern:

Be it known that I, GEORGE BENJAMIN EVANS, of the city of Toronto, inthe county of York and Province of Ontario, Canada, have inventedcertain new and useful Improvements in l/Vindows; and I hereby declarethat the following is a full, clear, and exact description of the same.

It is customary, in that class of windows in which the window sashesslide vertically to provide two sets of window stops extend: ing fromthe top to the bottom of the window frame and permanently securedthereto, one set being provided for the sliding movement of the uppersash, and the other set being provided for the sliding movement of thelower sash, suitable sash ropes, passing over pulleys set in the Windowframe, being permanently connected, at one end to the window sashes,and, at the other end to suitable sash weights for counterbalancingpurposes, but this arrangement of stops and attachment of sash ropesrenders it impossible to easily remove either of the win,- dow sashesfrom the window frame for cleaning or repairing purposes.

My present invention therefore relates to the construction of the windowframe and window stops, whereby the window sashes can be easily. removedfrom the window frame, and it comprises movable stop sections which,when in their normal or operative position, securely hold the upper andlower sashes in their respective slideways, and which, when moved intotheir inoperative position, will permit of the removal of the windowsashes from the window frame, and it also relates to a means fordetachably fastening the sash ropes to the window sashes.

For an understanding of the invention reference is to be had to thefollowing description and to the accompanying drawings in which:

Figure l, is a perspective view showing the construction of the windowframe and window sashes. Fig. 2, is a perspective view of the windowframe with the window sashes removed. Fig. 3, is a perspective view ofthe lower window sash. Fig. 4, is a perspective view of a movablesection of the window stops, and, Fig. 5, is a perspec tive view of thefastening means connecting the sash rope to the window sash.

Like characters of reference refer to like parts throughout thespecification and drawings.

The window frame a is provided with the usual, upper window sash b, and,lower window sash c, slidable vertically in slideways formed by thewindow stops (Z c and f.

As the general construction of the window frame and window sashes issimilar to that of windows in common use, it will not be 1necessary todescribe these parts in de tai Thewindow stops at placed on the innerside of the lower window sash 0, extend from the window sill toapproximately the top of, or slightly above, the meeting bar 0 toprevent the inward movement of the lower sash when in its closedposition, and when sliding vertically in the window frame. The lowersection cl of each window stop 03 is permanently connected to the windowframe, but the upper section d is movable into and out of line with thepermanent section.

The window stops 6, extending from the bottom to the top of the windowframe, consist of movable sections 6, corresponding in location with themovable sections cl, and permanent sections 6 0 below and above themovable sections.

The window frame sides 72. have vertical slots 9 for the action of themovable stop sections d e, the top and bottom sides 9 of the slotsconverging toward the inner sides of the window frame and engaging withthe top and bottom sides of the movable stop sections to limit theirinward movement.

The stop f' extends from the top of the window frame to approximatelythe bottom of, or slightly lower than, the meeting bar 6 of the uppersash b.

The movable sections d and e are mounted upon the cranked ends of therocker shafts i journaled in the window frame sides h and move unitedlyinto and out of line with the permanent stop sections of the Windowstops cl and e.

To remove the window sashes, the movable stop sections d and e arepressed outwardly until their inner faces are at least flush with theinner faces of the window frame sides. The lower sash is then raiseduntil its lower edge is above the top of the permanent stop sections 03and is then drawn inward clear of the window frame.

The upper window sash is then lowered toward the bottom of the windowframe until its upper edge is free to swing through the gap formed bythe displacement of the movable sections d 0C and is then drawn inwardthrough the gap, top first, until clear of the window frame. 7

To replace the window sashes, the upper sash is passed outward throughthe gap formed by the displacement of the movable sections d e and thenturned into a vertical position in the slideways between the stops f ande. The lower sash is then raised in the window frame until its loweredge is above the permanent stop sections cl and then lowered in theslideways formed by the permanent stop sections 61 and e. The movablestop sections are then permitted to move inward until they are in linewith the permanent stop sections, completing the window stops 0? and eto enable them to guide the vertical movement of the upper and lowerwindow sashes and to preven their lateral movement.

Various means may be provided for restoring the movable stop sections totheir normal or operative positions but I find it convenient to usesprings j for this purpose, these springs being contained in the windowframe sides hso as to yield when the movable stop sections are pressedoutward, and to restore them to their normal or operative position whenthe outward pressure is removed.

Various means may be provided for retaining the movable stop sections intheir inoperative or outward position, one means which I prefer to use,consisting of buttons is pivoted to the inner faces of the window framesides h to overlap the movable stop sections cl when in their outwardlypressed position, these buttons being also used to engage in slots (1 inthe movable stop sections d and lock them in their normal or operativeposition.

To provide a detachable means for connecting the sash rops to the windowsashes, I find it advisable to provide the sash ropes with hooks Zengaging with screw eyes at in the usual rope channels in the sides ofthe window sashes. By disconnecting the hooks from the screw eyes, thesash ropes can be detached from the window sashes when the latter areremoved from the window frame, the sash ropes then being drawn over thepulleys by the sash weights 0 until arrested by the hooks coming intocontact with the pulley casing 79.

In the construction of window frames for new work the window frame sidesmay be slotted as above described to receive the movable stop sections,but to adapt the device to old window frames, and in some cases, newones, it is necessary to cut out the section a of the window framebetween the movable stop sections d and e, and to provide theseremovable frame sections a with fastening plate a which are set incountersunk seats in the adjacent parts of the window frame sides. Bythis latter construction it is possible to assemble the movable stopsections d and e, rocker shaft 2', springs j, and removable framesections a, place them in position in the window frame, and-then securethem to the window frame sides by fastening the plates thereto.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is:

In combination, a window frame, two inner stops extending from thewindow sill to approximately the top of the lower window sash, each ofthe inner window stops consisting of a lower section fixedly attached tothe window frame, and an upper section yieldingly held to move into andout of line vertically with the lower section, two middle stops eachcomprising a yielding middle section in line laterally with the yieldingsection of the inner stop, and two other sections fixedly attached tothe window frame above and below the yielding section and two fixedlyattached outer stops extending from the top of the window frame to belowthe top of the yielding sections, but not to the bottom of the same.

Toronto, November 10th, 1910.

GEORGE BENJAMIN EVANS.

Signed in the presence of C. H. RIOI-IES, H. L. TRIMBLE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

